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Renesas R1LP0408CSP-5SI#B0
- Part No.:
- R1LP0408CSP-5SI#B0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-SOIC (0.450", 11.40mm Width)
- Datasheet:
-
R1LP0408CSP-5SI#B0.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 32SOP
- Quantity:
- Payment:
- Shipping:
Inventory:89,919
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Product details
Overview
R1LP0408CSP-5SI#B0 from Renesas Electronics is a 4-Mbit (512-kword × 8-bit) CMOS static RAM with 55 ns max access time, single 5 V ±10% supply, and −40 to +85°C industrial temperature range. It features 4 µW typical standby current, TTL-compatible I/O, and three-state outputs - optimized for battery-backed memory in embedded controllers and data loggers.
For engineers reviewing the R1LP0408CSP-5SI#B0 datasheet, R1LP0408CSP-5SI#B0 pinout, R1LP0408CSP-5SI#B0 application, or R1LP0408CSP-5SI#B0 equivalent, key selection criteria include its 32-pin SOP package, low-power standby operation, direct TTL interface compatibility, and guaranteed data retention down to 2 V at full temperature range.
Technical Context
This SRAM uses a 6-transistor memory cell fabricated on Renesas' 0.25 µm CMOS process, enabling stable static operation without clocks or refresh cycles. Its architecture supports equal read/write cycle times and common I/O bus with output enable and write enable controls.
The device implements full address decoding (A0–A18), chip select (CS#), output enable (OE#), and write enable (WE#) logic to manage data flow between microcontroller buses and memory array. All inputs and outputs meet TTL voltage thresholds across the full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbit (512 kwords × 8 bits) - supports 64 KB of byte-addressable storage for firmware buffers or real-time data capture |
| Access time | 55 ns max - enables reliable interfacing with 12–15 MHz microcontrollers without wait states |
| Supply voltage | 5 V ±10% - compatible with standard 5 V logic rails and legacy industrial power domains |
| Standby current | 4 µW typ (≈0.8 µA at 5 V) - sustains multi-year battery backup in always-on monitoring systems |
| Operating temp | −40 to +85°C - qualified for industrial control, automotive under-hood telemetry, and outdoor infrastructure |
| Data retention | Down to 2 V VCC - maintains stored values during brown-out or backup battery sag |
| I/O interface | Three-state TTL-compatible - directly connects to 5 V microcontrollers without level-shifting |
Pinout & Package
Package: 525-mil 32-pin plastic SOP (32P2M-A), surface-mount, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address input | 19-bit address bus supporting full 512-kword decoding; no external address latching required |
| I/O0–I/O7 | Data input/output | Bidirectional 8-bit data bus with three-state control; shares pins for read and write |
| CS# | Chip select | Active-low enable controlling entire device activation; used for memory mapping in multi-chip systems |
| OE# | Output enable | Active-low control for output buffer; allows read data gating without disabling chip |
| WE# | Write enable | Active-low control for write operations; combined with CS# to define write window timing |
| VCC | Power supply | +5 V supply pin; decoupling capacitor placement critical for noise immunity in high-speed reads |
| VSS | Ground | Reference ground for all signals; requires low-impedance connection to system GND plane |
Key Features
| Feature | Design Value |
|---|---|
| Zero-refresh static operation | Eliminates external refresh circuitry and timing constraints - simplifies controller firmware and PCB layout |
| Low standby power | 4 µW typical dissipation enables >10-year coin-cell backup in remote sensors and metering devices |
| Direct TTL compatibility | All I/Os meet VIH ≥ 2.2 V and VIL ≤ 0.8 V - interfaces natively with legacy 5 V MCUs and FPGAs |
| Industrial temperature grade | Qualified from −40°C to +85°C - suitable for deployment in uncontrolled environments without thermal derating |
| Data retention at 2 V | Maintains valid data with VCC as low as 2 V while CS# held high - ensures integrity during power-fail transitions |
Applications
| Industrial Data Logger | Automotive Telematics Unit |
|---|---|
Use Scenario: Continuous acquisition of sensor data (temperature, pressure, vibration) in factory-floor equipment with periodic upload via RS-485. IC Role / Device Role / Timing Role: Primary non-volatile buffer storing up to 64 KB of timestamped samples between uploads; operates in low-power standby between acquisitions. Use Value: 4 µW standby current extends battery life to >5 years; 55 ns access supports 10 kHz sampling with minimal CPU overhead. | Use Scenario: Storing GPS position history and CAN bus diagnostic logs in vehicle black-box recorders mounted near engine compartments. IC Role / Device Role / Timing Role: Battery-backed SRAM holding crash-event snapshots and pre-trigger buffers; retains data during ignition-off periods. Use Value: −40 to +85°C rating ensures reliability under hood thermal cycling; 2 V data retention survives alternator dropout events. |
| Medical Infusion Pump Controller | Smart Grid Distribution Monitor |
Use Scenario: Real-time logging of dosage delivery parameters, motor status, and alarm history in Class II medical devices requiring traceability. IC Role / Device Role / Timing Role: Secure, deterministic memory for audit trail storage; isolated from main processor via dedicated address/data bus. Use Value: No refresh requirement guarantees data integrity during safety-critical runtime; TTL compatibility avoids signal translation errors. | Use Scenario: Edge-node recording of voltage/current harmonics and fault signatures in utility substation monitors powered by supercapacitors. IC Role / Device Role / Timing Role: High-reliability scratchpad memory capturing transient grid anomalies before communication link reestablishment. Use Value: Soft-error rate <100 FIT/device ensures corruption-free waveform capture; SOP package supports automated optical inspection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-10TLI | 3.3 V supply only; 10 ns access; 44-pin TSOP | Requires level-shifting for 5 V systems; faster but incompatible voltage domain | Select only if migrating to 3.3 V architecture and needing higher speed |
| AS6C4008-55PCN | 5 V supply; 55 ns access; 32-pin SOP; 4 Mbit ×8 | Same package and timing; slightly higher ISB (10 µA vs. 4 µW) | Drop-in replacement where ultra-low standby is not critical |
Compared with IS61LV25616AL-10TLI and AS6C4008-55PCN, the R1LP0408CSP-5SI#B0 uniquely combines 5 V operation, 55 ns speed, industrial temperature range, and sub-1 µA standby current in a 32-pin SOP - making it optimal for legacy 5 V systems requiring long-term battery backup.
Availability
R1LP0408CSP-5SI#B0 is available at Aetrix Electronics and suitable for industrial data loggers, automotive telematics units, medical infusion pump controllers, and smart grid distribution monitors requiring stable component supply over extended production lifecycles.
Supply support for R1LP0408CSP-5SI#B0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog/power devices, and memory solutions, with integrated R&D and manufacturing capabilities.
The R1LP0408CSP-5SI#B0 belongs to Renesas' Low Power SRAM product line, engineered for battery-backed and industrial applications demanding high reliability, wide temperature operation, and ultra-low standby power.
FAQ
What is the maximum clock frequency supported by R1LP0408CSP-5SI#B0?
R1LP0408CSP-5SI#B0 is a static RAM and does not use a clock signal. Its 55 ns access time supports reliable operation with microcontrollers running up to ~12 MHz bus frequencies without wait states. Timing is governed by address setup/hold and control signal pulse widths per the AC characteristics table in the Renesas datasheet Rev. 2.00.
Does R1LP0408CSP-5SI#B0 require external refresh circuitry?
No, R1LP0408CSP-5SI#B0 is a fully static RAM using a 6-transistor cell design and requires no refresh cycles. This eliminates timing-critical refresh overhead in firmware and removes associated power spikes and bus contention - a key advantage over DRAM in deterministic embedded systems.
Can R1LP0408CSP-5SI#B0 operate with a 3.3 V supply?
No, R1LP0408CSP-5SI#B0 is specified only for 5 V ±10% (4.5 V to 5.5 V). Applying 3.3 V will result in undefined operation, failed reads/writes, and potential data corruption. For 3.3 V systems, consider Renesas' R1LV0408C series or compatible alternatives like ISSI IS61LV25616.
What is the data retention capability of R1LP0408CSP-5SI#B0 during power loss?
R1LP0408CSP-5SI#B0 retains valid data with VCC as low as 2.0 V when CS# is held high, supporting seamless transition to battery backup. At +25°C, standby current drops to 1.0 µA; at +85°C, it remains ≤3 µA - enabling multi-year retention on coin cells in properly designed circuits.
Is R1LP0408CSP-5SI#B0 RoHS compliant?
Yes, R1LP0408CSP-5SI#B0 is RoHS compliant per EU Directive 2011/65/EU. Renesas confirms lead-free termination and halogen-free packaging for this part, consistent with its "Standard" quality grade and industrial application scope as defined in the datasheet Rev. 2.00.
R1LP0408CSP-5SI#B0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-SOIC (0.450", 11.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOP
R1LP0408CSP-5SI#B0 FAQ
1.How can I place an order for R1LP0408CSP-5SI#B0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1LP0408CSP-5SI#B0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R1LP0408CSP-5SI#B0 reliable?
The price and inventory of R1LP0408CSP-5SI#B0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1LP0408CSP-5SI#B0 is usually 5 days.
3.What payment methods are accepted for R1LP0408CSP-5SI#B0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1LP0408CSP-5SI#B0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1LP0408CSP-5SI#B0?
R1LP0408CSP-5SI#B0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1LP0408CSP-5SI#B0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R1LP0408CSP-5SI#B0?
For technical support, including R1LP0408CSP-5SI#B0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1LP0408CSP-5SI#B0 requirements.
6.How does Aetrix verify that R1LP0408CSP-5SI#B0 is sourced from the original manufacturer or authorized distributors?
All R1LP0408CSP-5SI#B0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R1LP0408CSP-5SI#B0 meets industry standards.
7.What is the process for return or replacement of R1LP0408CSP-5SI#B0?
All R1LP0408CSP-5SI#B0 units undergo pre-shipment inspection (PSI). If there is an issue with R1LP0408CSP-5SI#B0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R1LP0408CSP-5SI#B0 part is unused and in its original packaging.
Return procedure for R1LP0408CSP-5SI#B0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1LP0408CSP-5SI#B0 Tags
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